/// <summary>
/// Unsigned VarInt format
/// </summary>
public static void WriteUInt64(CitoStream stream, int val)
{
byte[] buffer = new byte[10];
int count = 0;
while (true)
{
#if !CITO
buffer[count] = (byte)(val & 0x7F);
#else
buffer[count] = (val & 0x7F).LowByte;
#endif
val = ProtoPlatform.logical_right_shift(val, 7);
if (val == 0)
{
break;
}
buffer[count] |= 0x80;
count += 1;
}
stream.Write(buffer, 0, count + 1);
}
/// <summary>
/// Read the value for an unknown key as bytes.
/// Used to preserve unknown keys during deserialization.
/// Requires the message option preserveunknown=true.
/// </summary>
public static byte[] ReadValueBytes(CitoStream stream, Key key)
{
byte[] b;
int offset = 0;
switch (key.GetWireType())
{
case Wire.Fixed32:
b = new byte[4];
while (offset < 4)
{
offset += stream.Read(b, offset, 4 - offset);
}
return(b);
case Wire.Fixed64:
b = new byte[8];
while (offset < 8)
{
offset += stream.Read(b, offset, 8 - offset);
}
return(b);
case Wire.LengthDelimited:
//Read and include length in value buffer
int length = ProtocolParser.ReadUInt32(stream);
CitoMemoryStream ms = new CitoMemoryStream();
{
//TODO: pass b directly to MemoryStream constructor or skip usage of it completely
ProtocolParser.WriteUInt32(ms, length);
b = new byte[length + ms.Length()];
byte[] arr = ms.ToArray();
for (int i = 0; i < ProtoPlatform.ArrayLength(arr); i++)
{
b[i] = arr[i];
}
offset = ms.Length();
}
//Read data into buffer
while (offset < ProtoPlatform.ArrayLength(b))
{
offset += stream.Read(b, offset, ProtoPlatform.ArrayLength(b) - offset);
}
return(b);
case Wire.Varint:
return(ProtocolParser.ReadVarIntBytes(stream));
default:
#if !CITO
throw new NotImplementedException("Unknown wire type: " + key.GetWireType());
#else
return(null);
#endif
}
}
public static byte[] ReadVarIntBytes(CitoStream stream)
{
byte[] buffer = new byte[10];
int offset = 0;
while (true)
{
int b = stream.ReadByte();
if (b < 0)
#if !CITO
{ throw new IOException("Stream ended too early"); }
#else
{ return(null); }
#endif
#if !CITO
buffer[offset] = (byte)b;
#else
buffer[offset] = b.LowByte;
#endif
offset += 1;
if ((b & 0x80) == 0)
{
break; //end of varint
}
if (offset >= ProtoPlatform.ArrayLength(buffer))
#if !CITO
{ throw new InvalidDataException("VarInt too long, more than 10 bytes"); }
#else
{ return(null); }
#endif
}
byte[] ret = new byte[offset];
for (int i = 0; i < offset; i++)
{
ret[i] = buffer[i];
}
return(ret);
}
/// <summary>
/// Writes length delimited byte array
/// </summary>
public static void WriteBytes(CitoStream stream, byte[] val)
{
WriteUInt32_(stream, ProtoPlatform.ArrayLength(val));
stream.Write(val, 0, ProtoPlatform.ArrayLength(val));
}
public static void WriteString(CitoStream stream, string val)
{
WriteBytes(stream, ProtoPlatform.StringToBytes(val));
}
public static string ReadString(CitoStream stream)
{
byte[] bytes = ReadBytes(stream);
return(ProtoPlatform.BytesToString(bytes, 0));
}
